Method and apparatus for decoding bar code symbols along search steps
AssigneeUnited Parcel Service of America, Inc.
InventorsLuis Figarella, Mihael Klancnik
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AssigneeUnited Parcel Service of America, Inc.
InventorsLuis Figarella, Mihael Klancnik
Estimating the term…
A system for detecting a bar code symbol receives a two-dimensional image containing the symbol, where the system has no a priori knowledge of the orientation of the symbol in the image. The system scans the image in one dimension to locate a quiet zone for the symbol and searches the image in one dimension to identify a start/stop character of the symbol. A system for decoding a bar code symbol having a plurality of elements receives a signal representative of the symbol. The system searches the signal along a first search step to characterize the width of one of the elements. The system then selects a second search step by projecting from the first search step onto a reference line, where the reference line is not parallel to either the first or second search steps. The system then searches the signal along the second search step to characterize the width of another of the elements. A system for decoding a bar code symbol having at least three elements receives a signal representative of the symbol. The system characterizes a first set of two or more elements by searching the signal along a first search step. The system also characterizes a second set of two or more elements by searching the signal along a second search step, where the first set and the second set have an element in common and where the first and second search steps are not collinear.
A method for decoding a bar code symbol having a plurality of elements, comprising the steps of:
An apparatus for decoding a bar code symbol having a plurality of elements, comprising:
A method for decoding a bar code symbol having at least three elements, comprising the steps of:
An apparatus for decoding a bar code symbol having at least three elements, comprising:
Dependencies are inferred from the claim text.